Hello Word Thread!

I'm losing my mind with this one!!
I have a template where I have styles for Headings 1, 2, 3
I have have a Multilevel list Name list paragraph, I want the list to restart after each Heading. So in the example below 4 in Heading 2 should really be 1. and so on.
I have a document that this happens in some cases and it others it doesn't. Does any one have an idea? Where I can start!


Heading 1
1. Test 1
a. Test 1a
2. Test 2
3. Test 3

Heading 2
4. Test 4 SHOULD BE 1
a. Test 4a
5. Test 5 - SHOULD BE 2
6. Test 6 - SHOULD BE 3

Heading 1
7. Test 7 - SHOULD BE 1
a. Test 7a
i. Test 7i